Blood and Abyss: Book 4 in the darkness series

In a world scarred by demon wars, Jasmine has spent five years nursing the pain of her family's murder, her every step driven by vengeance. But when the enigmatic pair Zypher and Frost offer a different path, she must decide if her rage can be channeled toward something bigger. The two strangers assemble a team of four specially-called warriors, each chosen for a unique power, and task them with retrieving a powerful containment crystal. Together they must seal the Rift that keeps the demonic Legion at bay, confront the ancient death-wrapping entity Legon, and endure a brutal Trial of Sacrifice that forces every member to give up something precious to prove their worth. The stakes are clear: humanity's survival and the chance to rebuild after the demon wars. Jasmine's personal quest for vengeance becomes a collective struggle against an ever-looming darkness, and the fate of the world hangs in the balance.